Slumber bag



FIG. 1 is a top plan view of a slumber bag;

FIG. 2 is a right side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a bottom view thereof; and,

FIG. 5 is a rear view thereof.

The broken line showing of the name “Kevin” is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a slumber bag, as shown and described. 